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21 July 1999 <br /> AGE-NC Project No. 99-0611 <br /> Page 2 of 7 <br /> 3.0. ON-SITE CONTROL <br /> The Site Safety Officer will coordinate site access control and security. An exclusion zone will be <br /> established approximately 20 feet around drilling areas. No unauthorized person shall be allowed <br /> within this exclusion area. <br /> 4.0. HAZARD EVALUATION <br /> The following substance(s) or hazards are suspected at the following concentrations: <br /> SUBSTANCES INVOLVED: CONCENTRATIONS: <br /> Fuel Hydrocarbons Unknown <br /> Hydraulic Oil Unknown <br /> Chlorinated Hydrocarbons Unknown <br /> The primary hazards of each are identified as follows: <br /> 1. Hydrocarbon fuels - Components of fuels are colorless liquids with strong aromatic <br /> petroleum hydrocarbon-like odors. They are flammable and have low solubility in water. <br /> Exposure to these materials in excess of recommended exposure limits can cause mild eye, <br /> nose, and throat irritation and can produce a narcotic effect on the central nervous system. <br /> Symptoms of exposure at these concentrations include headache, nausea, drowsiness, <br /> dizziness,and loss of coordination. Certain components of gasoline(BTE&X etc.)are known <br /> or suspected carcinogens. <br /> 2. Hydraulic Oil - Similar to Hydrocarbon fuels. <br /> 3. Chlorinated Hydrocarbons-Generally colorless oily liquids with a chloroform-like odor. The <br /> various compounds are volatile and have low to moderate solubility. The compounds depress <br /> the central nervous system, cause skin, nose and eye irritation, may cause tremors. Organ <br /> damage potential; target organs include skin, eyes, respiratory system, heart, liver, and <br /> kidneys. <br /> The additional potential hazards include: Slip-trip-fall hazards,noise, heave equipment(i.e., mobile <br /> drill rig), vibration hazards, traffic hazards. etc. <br /> Advanced CeoEnvironmental,Inc. <br />